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  • Be at one with your music with ZEN DAC

    Highly specified, super-affordable and simple to use, iFi’s ZEN DAC elevates your digital audio experience to a higher plane

    Southport, England – Hot on the heels of the ZEN Blue hi-res Bluetooth streamer, iFi expands the ZEN family of desktop-sized audio products with the ZEN DAC – a USB DAC/headphone amp offering a level of specification and performance that belies its eminently affordable £129 price tag.

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    Designed for home use – on a desk, perhaps, or in the living room – the ZEN DAC connects to PCs and Macs, or smart devices such as tablets or phones, via USB. Its hi-res digital-to-analogue conversation technology processes all forms of digital audio to a super-high standard, while the integrated analogue headphone amplifier delivers superb sound with all headphone types, from in-ear monitors to larger on- and over-ear designs.

    Compared to simply plugging headphones directly into a computer or smart device, the ZEN DAC transforms the listening experience – sound is clearer, more detailed, more expansive and engaging, making the most of whichever headphones are connected.

    As well as driving headphones, the ZEN DAC can be used as a USB DAC in a home audio system, with or without its volume control engaged. What’s more, whether you’re hooking up headphones, an external amp or active speakers, you have a choice of single-ended or balanced connection – a remarkable facility at the price.


    Digital stage

    The DAC section is based around a Burr-Brown DAC chip that iFi uses extensively, selected for its fluid, highly ‘musical’ sound quality and ‘True Native’ architecture. This, together with the XMOS chip used for input processing, enables iFi to deliver excellent sound quality across all manner of digital audio formats including hi-res PCM, ‘bit-perfect’ DSD and MQA *– the hi-res streaming codec, as used by Tidal’s ‘Masters’ tier. Given the diminutive asking price, the ZEN DAC’s digital audio credentials are highly impressive.

    PCM and DXD audio data is supported up to 24-bit/384kHz, alongside DSD sampling rates from 2.8MHz to 12.4MHz (DSD256). Thanks to the Burr-Brown chip’s True Native design, PCM and DSD take separate pathways – this enables DSD to remain ‘bit-perfect’ in its native form, right through to analogue conversion. Many DACs that claim DSD compatibility accept DSD data but then convert it to PCM; for DSD purists, the ZEN DAC is a fantastic affordable solution.

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    Another circuit feature that separates this and other DACs made by iFi from competing designs is iFi’s in-house programming of the XMOS chip. While other manufacturers simply use the firmware that comes with the chip off-the-shelf, which is not typically optimised for audiophile-grade sound, iFi programs its own bespoke firmware to boost audio processing power.

    iFi’s continuous software development allows features to be added or optimised via firmware updates, enabling the ZEN DAC to be tailored to the user’s playback priorities and ensuring it stays cutting-edge over time. Users can even download and install different versions of iFi firmware to experiment with different digital filters should they so desire.

    Extensive clock-locking is used throughout the digital stage to eradicate jitter, maintaining the integrity of the digital signal until conversion.

    Analogue stage

    The ZEN DAC’s analogue stage is a balanced design – highly unusual in a DAC/headphone amp anywhere near this price point. It incorporates a range of high-quality circuit components, carefully selected for their performance in an audio context, including C0G capacitors from TDK, a precision low-noise power supply IC from Texas Instruments and a high-quality analogue volume pot.

    The headphone amp stage has switchable gain, which iFi terms PowerMatch. This matches the level of drive to the load presented by the headphones, by adjusting input sensitivity and thereby signal strength. With high-sensitivity headphone types such as in-ear monitors, leave PowerMatch at its lower setting for ultra-low-noise performance. But if your headphones require more drive – most on/over-ear types, for example – press the PowerMatch button on the front panel to increase gain.

    TrueBass is another user-selectable feature. An evolution of iFi’s established XBass circuit, TrueBass is a sophisticated form of ‘bass boost’ that subtly enhances low frequencies without muddying the midrange – particularly useful with earphones and open-back headphones that may lack deep bass. It operates entirely in the analogue domain rather than messing with the digital signal via DSP and may be switched in or out via another button on the front panel.


    Well connected

    The ZEN DAC sports Pentaconn 4.4mm balanced outputs, both front and back – this is a relatively new interface type, designed to enable balanced signal transfer between compact products that cannot accommodate traditional XLR connections. The front-mounted 4.4mm output sits alongside a standard, single-ended 6.3mm headphone socket – thus, the benefits of balanced headphone designs are fully utilised, whilst also accommodating every type of headphone, both balanced and single-ended.

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    The 4.4mm output to the rear enables connection to amps and active speakers equipped with a balanced input – either a Pentaconn 4.4mm input, or XLR inputs via a 4.4mm-to-XLR cable. Single-ended RCA outputs are also provided.

    These line-level outputs – both balanced and single-ended – can be switched between ‘variable’ and ‘fixed’, enhancing the ZEN DAC’s versatility. The variable setting applies volume control to the audio signal, enabling the ZEN DAC to perform as a preamp feeding a power amp or active speakers. The fixed option bypasses the volume control, fixing the output at 4.2V (balanced) or 2.1V (single-ended) for connection to an external preamp or integrated amp.

    The ZEN DAC’s asynchronous USB Type B input supports the ‘SuperSpeed’ USB 3.0 standard and is also compatible with USB 2.0.

    In common with other ZEN Series products, the ZEN DAC sports a sturdy, smartly finished aluminium enclosure, neatly sized at 158x35x100mm (WxHxD). Even the rotary volume control is aluminium, giving a reassuringly solid feel – impressive at the product’s super-affordable price. Behind the volume control resides an LED that changes colour to indicate the sampling rate of the audio data received.

    The iFi ZEN DAC is available from mid-October, at an RRP of £129. Further ZEN Series products are set to follow in the coming months.

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Recent Reviews

  1. Aibo
    Surprise-packed Zen
    Written by Aibo
    Published Nov 9, 2019
    5.0/5,
    Pros - - Great build quality
    - Great sound quality with GTO filter
    - Upgradability with low noise power supply
    Cons - - None with latest firmware
    Zen DAC is one of the latest iFi products and it's their most affordable desktop DAC to date. It's actually a DAC/headphone amp combo with an USB input and several outputs: single-ended line out, balanced line out, single-ended headphone out and balanced headphone out. Quite a bit for a device costing $129/149€.

    It's built like a tank with thick aluminium shell, it's reassuringly weighty too. It lights up when it's connected to PC, it turns down automatically with it even if external power supply is connected. No signal, no need to be powered - smart.

    Regarding formats it can handle basically anything you throw at it: Hi-Res PCM, DSD, MQA...

    DSC_6813.jpg DSC_6832.jpg

    SOUND QUALITY

    When I took it out of the box I firstly hooked it up to my room setup which is Cyrus 8v2 integrated amp and AE Aegis Evo 3 speakers. The sound was fluid and kind of laid back. Bass was weighty and pleasantly warm but not as fast and precise as the best in class. Mids were clean and vocals were too, spatially they were laid back - this is not your typical "in your face" Sabre-like sound. Highs were extended and slightly pronounced so Zen sounds positively sparkly and recreates air from the recordings very nicely. All in all I found sound to be fluid and pleasant but not really as precise and engaging as some other DACs (Schiit Modi 3 for example).

    GTO to the save

    But then I was browsing the official web page and I saw that there's a possibility of installing new firmware on the device, and with it comes a new GTO filter in place of Linear Phase one that comes as a factory default. A minute later my Zen was flashed with latest 5.3c firmware and that's when I really started to like this unit. Everything just came into focus. Bass was still deep but now moved faster and created cleaner, more precise notes. Vocals became better defined and sounded fuller, not as laid back as before, very present. Highs essentially kept their liveliness and airiness. Things that were already very good, like fluidity, were still good. So to my ears, GTO filter is clearly superior and it's addition elevated this DACs sound from good to great.

    Now, let's dance

    Finally, I decided to try out the Zen's ability to use external power supply. I hooked it up to my self-made SuperTeddyReg based PS and was surprised by the result. Why surprised you ask - well because I try it with every DAC I test but usually it makes very little difference so I usually don't mention it. This time around it was clearly different. Zen reacted to it very nicely, background became darker and notes gained in body and energy making everything sound more realistic and lifelike, putting smile on my face. I liked this newly unleashed fidelity, I liked it very much. Unfortunately I didn't have a chance to try iFi's own low noise wall wart called iPower, but if those can provide similar result as my linear power supply, that would make a great bundle buy.

    Headphones

    I'm currently not in possession of any demanding headphones but I tried it with what I have: AKG K92, Takstar Pro 82, Tin Audio T2, BLON BL-03... Everything said for sound character on line-out stands here too. Fluid and clean sound with lush bass and sparkly highs. I never felt that I'm lacking power but I do like power match (basically low gain mode) so I can use IEMs more comfortably. Bass boost of course elevates bass and mid bass but is not really my cup of tea so I preferred it on off - Zen has quite enough bass as it is in my opinion.

    CONCLUISON

    Zen was really interesting experience, great build and functionality, with several layers to it regarding sound quality. Directly from the box it's already very good sounding, but you should definitely spend few minutes to install new firmware with GTO filter which will peel its first layer and get sonud quality to a class leading level. At this moment Zen is already a great buy and very easy recommendation. But if you feel adventures, there is yet another layer to be peeled if you add a low noise power supply to it.

    Lastly, I'll share what is probably the best testimony of my impressions about Zen - this unit was loaned to me by iFi for a review but I decided to purchase it and keep it in my system. Is there a better recommendation to give?

    ...

    I made a video review too:

      border66 likes this.

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